This was very helpful - my child had to work with wheel and axle and IMA, and his result seemed alarmingly high - in fact, it was, because the radii were so vastly different!
Thanks for the video. What I don't understand is why the formula you give is different than the traditional formula of MA = output/input. When you google mechanical advantage or watch videos, that is the formula they always give.
A first class lever. The fulcrum is where the pedal arm is welded to the center of the chain gear. The output side is where the chain contacts the gear and the input side is is where the pedal attaches.
+davenport1947 OK, thanks for your reply! But let me make a counter point to that conclusion. A bicycle crank arm is not a first class lever because the chain/chainring also places the load in front of the fulcrum point as well (when the crank arm is in the 3 o'clock position which is typically when a rider makes the most power) which would negate some if not all the mechanical advantage it would provide if it were a first class lever. Secondly, the mechanical advantage you obtain from a crank arm is obtained from the gear ratios (i.e. larger gears on the rear wheel and smaller gears on the crankset). Thanks in advance for your reply!
Mr. Davenport, is there a way I can make personal contact with you? I have a provisional patent application I would like for you to review that primarily involves the mechanical advantages of a first class lever and a wheel and axle. Thanks. Doug
This was very helpful - my child had to work with wheel and axle and IMA, and his result seemed alarmingly high - in fact, it was, because the radii were so vastly different!
Thanks for the video. What I don't understand is why the formula you give is different than the traditional formula of MA = output/input. When you google mechanical advantage or watch videos, that is the formula they always give.
Thank you sir, this really helped me!!
Better than my school science lesson
Thank you for the video! Do you have a favorite example of a wheel and axle in real life?
How about a doorknob...
absolutely helpful
great video, looking forward to more!
Tao grato pelo o video aula...
Very easy to follow 👍🏾
is a ball a wheel and axle if so how do u calculate the MA?
How does that axle don't make vehicle rotate with as whole vehicle is attached only to wheel
Was wondering what class of lever you would classify a bicycle crank arm?
A first class lever. The fulcrum is where the pedal arm is welded to the center of the chain gear. The output side is where the chain contacts the gear and the input side is is where the pedal attaches.
+davenport1947 OK, thanks for your reply! But let me make a counter point to that conclusion. A bicycle crank arm is not a first class lever because the chain/chainring also places the load in front of the fulcrum point as well (when the crank arm is in the 3 o'clock position which is typically when a rider makes the most power) which would negate some if not all the mechanical advantage it would provide if it were a first class lever. Secondly, the mechanical advantage you obtain from a crank arm is obtained from the gear ratios (i.e. larger gears on the rear wheel and smaller gears on the crankset). Thanks in advance for your reply!
+davenport1947 I assume you never replied to my last conclusion since I did not receive any further e-mails from you???
+Dougiebrownjr The crank is a first class lever. Just as a single fixed pulley is a first class lever.
@@davenport1947 but when you google wheel and axle, the results say it's a 2nd class lever, not a 1st class lever. so, what's going on here?!
Thanks be to the Lord, Jeovah.
Mann ur amazing thx
Mr. Davenport, is there a way I can make personal contact with you? I have a provisional patent application I would like for you to review that primarily involves the mechanical advantages of a first class lever and a wheel and axle. Thanks. Doug
Unlucky boss
Mr. Davenport, is there anyway I can contact you by phone to discuss this crank arm thing further?
U forgot the AMA
thank you so much for explaining to us
How about the efficiency
MA(100%)
Mr. Davenport, is there anyway I can make contact with you other than e-mail?
This helped me do my home work 📃📚👌✏💼
Me too
Need it for school science
Make for childrens